As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - AIR TURNBACK - FLT 0116 - ON CLIMBOUT OF LAS EN ROUTE FOR LAX B-SYSTEM HYDRAULICS FAILED, TURNED BACK TO LAS AND LANDED WITHOUT FURTHER DIFFICULTY. MAINTENANCE FOUND HYDRAULIC LINE LEAKING BETWEEN B-SYSTEM PRESSURE MODULE AND A/C DRIVEN PUMP. REMOVED AND REPLACED HYDRAULIC LINE IAW BMM 29-09-11.